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e2e4f56056
glibc/sysdeps/unix/sysv/linux/x86
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H.J. Lu e2e4f56056 Add _dl_x86_cpu_features to rtld_global 
This patch adds _dl_x86_cpu_features to rtld_global in x86 ld.so
and initializes it early before __libc_start_main is called so that
cpu_features is always available when it is used and we can avoid
calling __init_cpu_features in IFUNC selectors.

	* sysdeps/i386/dl-machine.h: Include <cpu-features.c>.
	(dl_platform_init): Call init_cpu_features.
	* sysdeps/i386/dl-procinfo.c (_dl_x86_cpu_features): New.
	* sysdeps/i386/i686/cacheinfo.c
	(DISABLE_PREFERRED_MEMORY_INSTRUCTION): Removed.
	* sysdeps/i386/i686/multiarch/Makefile (aux): Remove init-arch.
	* sysdeps/i386/i686/multiarch/Versions: Removed.
	* sysdeps/i386/i686/multiarch/ifunc-defines.sym (KIND_OFFSET):
	Removed.
	* sysdeps/i386/ldsodefs.h: Include <cpu-features.h>.
	* sysdeps/unix/sysv/linux/x86/Makefile
	(libpthread-sysdep_routines): Remove init-arch.
	* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: Include
	<sysdeps/x86_64/dl-procinfo.c> instead of
	sysdeps/generic/dl-procinfo.c>.
	* sysdeps/x86/Makefile [$(subdir) == csu] (gen-as-const-headers):
	Add cpu-features-offsets.sym and rtld-global-offsets.sym.
	[$(subdir) == elf] (sysdep-dl-routines): Add dl-get-cpu-features.
	[$(subdir) == elf] (tests): Add tst-get-cpu-features.
	[$(subdir) == elf] (tests-static): Add
	tst-get-cpu-features-static.
	* sysdeps/x86/Versions: New file.
	* sysdeps/x86/cpu-features-offsets.sym: Likewise.
	* sysdeps/x86/cpu-features.c: Likewise.
	* sysdeps/x86/cpu-features.h: Likewise.
	* sysdeps/x86/dl-get-cpu-features.c: Likewise.
	* sysdeps/x86/libc-start.c: Likewise.
	* sysdeps/x86/rtld-global-offsets.sym: Likewise.
	* sysdeps/x86/tst-get-cpu-features-static.c: Likewise.
	* sysdeps/x86/tst-get-cpu-features.c: Likewise.
	* sysdeps/x86_64/dl-procinfo.c: Likewise.
	* sysdeps/x86_64/cacheinfo.c (__cpuid_count): Removed.
	Assume USE_MULTIARCH is defined and don't check it.
	(is_intel): Replace __cpu_features with GLRO(dl_x86_cpu_features).
	(is_amd): Likewise.
	(max_cpuid): Likewise.
	(intel_check_word): Likewise.
	(__cache_sysconf): Don't call __init_cpu_features.
	(__x86_preferred_memory_instruction): Removed.
	(init_cacheinfo): Don't call __init_cpu_features. Replace
	__cpu_features with GLRO(dl_x86_cpu_features).
	* sysdeps/x86_64/dl-machine.h: <cpu-features.c>.
	(dl_platform_init): Call init_cpu_features.
	* sysdeps/x86_64/ldsodefs.h: Include <cpu-features.h>.
	* sysdeps/x86_64/multiarch/Makefile (aux): Remove init-arch.
	* sysdeps/x86_64/multiarch/Versions: Removed.
	* sysdeps/x86_64/multiarch/cacheinfo.c: Likewise.
	* sysdeps/x86_64/multiarch/init-arch.c: Likewise.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym (KIND_OFFSET):
	Removed.
	* sysdeps/x86_64/multiarch/init-arch.h: Rewrite.
2015-08-13 03:41:22 -07:00
..
bits Add si_addr_bnd to _sigfault in x86 struct siginfo 2015-07-20 11:54:53 -07:00
sys Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
elision-conf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
elision-conf.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
elision-lock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
elision-timed.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
elision-trylock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
elision-unlock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
force-elision.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
gettimeofday.c x86: Remove vsyscall usage 2015-06-09 18:10:19 -03:00
hle.h Move remaining files out of nptl/sysdeps/unix/sysv/linux/x86/. 2014-05-14 15:32:18 -07:00
init-arch.c Move remaining files out of nptl/sysdeps/unix/sysv/linux/x86/. 2014-05-14 15:32:18 -07:00
init-arch.h Move remaining files out of nptl/sysdeps/unix/sysv/linux/x86/. 2014-05-14 15:32:18 -07:00
libc-vdso.h Consolidate sched_getcpu 2015-06-09 14:56:21 -03:00
Makefile Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
pthread_mutex_cond_lock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_mutex_lock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_mutex_timedlock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_mutex_trylock.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
time.c x86: Remove vsyscall usage 2015-06-09 18:10:19 -03:00